Twitter (TWTR): Shares jumping in early trading. Twitter easily beat on earnings and revenue, with daily active users up 12% from a year ago.

Tesla (TSLA): Shares are lower in midday trading. Tesla reported profit and revenue that was better than expected, but its overall loss was its biggest ever. For now, Tesla is standing by recently revised production forecasts for the Model 3.

Yelp (YELP): Shares are getting crushed in early trading. On an adjusted basis, Yelp reported profit that missed the mark, and it plans to take a loss in 2018 as it ramps up further investment in a competitive space.

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